Graph

2026-09-07 18:48:16 +08:00
parent 1564716731
commit c945aa211f
138 changed files with 10337 additions and 150 deletions
@@ -0,0 +1,59 @@
+#include <c_DirectedDFS.h>
+
+/* Private recursive engine helper */
+static void c_DirectedDFS_Internal(c_DirectedDFS_t* self, const c_Digraph_t* graph, c_size_t v) {
+    self->marked[v] = C_TRUE;
+    self->count++;
+
+    c_AdjList_t* adj = &graph->adj_list[v];
+    c_size_t size = (c_size_t)c_AdjList_GetSize(adj);
+
+    for (c_size_t i = 0; i < size; ++i) {
+        c_size_t w;
+        if (c_AdjList_Get(adj, i, &w)!=C_ERR_OK) {
+            continue;
+        }
+        if (!self->marked[w]) {
+            c_DirectedDFS_Internal(self, graph, w);
+        }
+    }
+}
+
+c_err_t c_DirectedDFS_Init(c_DirectedDFS_t* self, const c_Digraph_t* graph, c_size_t s, c_Allocator_t* allocator) {
+    if (!self || !graph || s >= graph->V) return C_ERR_PARAM;
+
+    self->allocator = allocator?*allocator:c_DefaultAllocator;
+    self->count = 0;
+    self->marked = (c_bool_t*)c_Allocator_Calloc(&self->allocator, graph->V, sizeof(c_bool_t));
+    if (!self->marked) return C_ERR_NOMEM;
+
+    c_DirectedDFS_Internal(self, graph, s);
+    return C_SUCCESS;
+}
+
+c_err_t c_DirectedDFS_InitMulti(c_DirectedDFS_t* self, const c_Digraph_t* graph, const c_size_t* sources, c_size_t source_count, c_Allocator_t* allocator) {
+    if (!self || !graph || !sources || source_count == 0) return C_ERR_PARAM;
+
+    self->allocator = allocator?*allocator:c_DefaultAllocator;
+    self->count = 0;
+    self->marked = (c_bool_t*)c_Allocator_Calloc(&self->allocator, graph->V, sizeof(c_bool_t));
+    if (!self->marked) return C_ERR_NOMEM;
+
+    for (c_size_t i = 0; i < source_count; ++i) {
+        c_size_t s = sources[i];
+        if (s < graph->V && !self->marked[s]) {
+            c_DirectedDFS_Internal(self, graph, s);
+        }
+    }
+    return C_SUCCESS;
+}
+
+void c_DirectedDFS_Destroy(c_DirectedDFS_t* self) {
+    if (!self) return;
+    if (self->marked) {
+        c_Allocator_Free(&self->allocator, self->marked);
+        self->marked = NULL;
+    }
+    self->count = 0;
+}
+